661041093 has 16 divisors (see below), whose sum is σ = 889228800. Its totient is φ = 436790640.

The previous prime is 661041083. The next prime is 661041097. The reversal of 661041093 is 390140166.

It is not a de Polignac number, because 661041093 - 2⁴ = 661041077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 661041093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (661041097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175888 + ... + 179606.

It is an arithmetic number, because the mean of its divisors is an integer number (55576800).

Almost surely, 2^661041093 is an apocalyptic number.

It is an amenable number.

661041093 is a deficient number, since it is larger than the sum of its proper divisors (228187707).

661041093 is a wasteful number, since it uses less digits than its factorization.

661041093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4232.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 661041093 is about 25710.7194181726. The cubic root of 661041093 is about 871.1163249550.

The spelling of 661041093 in words is "six hundred sixty-one million, forty-one thousand, ninety-three".